engineering

posted by .

A thermometer is used to measure the temperature of a gas flow through a pipe. The gas
temperature is read at 500°C and the duct temperature is measured to be 350°C. The thermometer
is cylindrical with a diameter of 1 mm and an intrusion length of 1 cm. It can be
assumed that the conductivity of the thermometer material is the same as stainless steel,
about 20 W/m-K. The emissivity of the thermometer tip is 02. The convective heat-transfer
coefficient between the thermometer and the gas is estimated to be 100 W/m2 -K. Estimate
the error in reading the gas temperature. Calculate the actual gas temperature.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A student places 100 mL of tap water in a beaker and uses both a thermometer and a temperature probe to measure temperature. The temperature of the water as measured by the thermometer is 27.7 C. The temperature of the water as measured …
  2. physics

    When an immersion glass thermometer is used to measure the temperature of a liquid, the temperature reading will be affected by an error due to heat transfer between the liquid and the thermometer. Suppose you want to measure the temperature …
  3. physics

    A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/kg•K reads 15.0°C. It is then completely immersed in 0.300 kg of water, and it comes to the same final temperature as the water. If the thermometer reads 44.0 °C, what …
  4. thermodynamics

    A thermometer of mass 0.0550 kg and of specific heat 0.837 kJ/kg•K reads 15.0°C. It is then completely immersed in 0.300 kg of water, and it comes to the same final temperature as the water. If the thermometer reads 44.0 °C, what …
  5. physics

    Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. However, if a significant amount of heat flows from the object to the thermometer, the temperature …
  6. PHYSICS

    Ideally, when a thermometer is used to measure the temperature of an object, the temperature of the object itself should not change. However, if a significant amount of heat flows from the object to the thermometer, the temperature …
  7. physics

    Temperatures are often measured with electrical resistance thermometers. Suppose that the resistance of such a resistance thermometer is 177Ω when its temperature is 28.7 °C. The wire is then immersed in a liquid, and the resistance …
  8. Chem

    In a lab where a thermometer is used to measure temperature for a hot liquid it is possible as and error that the thermometer will cause the temperature of the liquid to cool slightly causing a observation error but how can this be …
  9. Science - heat

    1-By opening the door of a refrigerator ehich is inside a room, the temperature of the room : A) decreases B) increases C) remains unchanged D) first decreases and then increases******(my ans) 2- The thermometer used to measure very …
  10. Chemistry

    For my chemistry lab, I reacted Mg powder with HCl to create H2 gas. I measured the volume of H2 gas created by salt water displacement by reading off an inverted test tube. I measured 14.0 mL and calculated the percent yield (used …

More Similar Questions